PL166449B1 - Method for enriching dusts wolt metal particles evolving in cupolas - Google Patents
Method for enriching dusts wolt metal particles evolving in cupolasInfo
- Publication number
- PL166449B1 PL166449B1 PL90283670A PL28367090A PL166449B1 PL 166449 B1 PL166449 B1 PL 166449B1 PL 90283670 A PL90283670 A PL 90283670A PL 28367090 A PL28367090 A PL 28367090A PL 166449 B1 PL166449 B1 PL 166449B1
- Authority
- PL
- Poland
- Prior art keywords
- dusts
- cupola
- metal particles
- cupolas
- dust
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000002923 metal particle Substances 0.000 title claims abstract description 9
- 239000000428 dust Substances 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 238000003723 Smelting Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 2
- 239000001301 oxygen Substances 0.000 abstract 2
- 229910052760 oxygen Inorganic materials 0.000 abstract 2
- 229910052725 zinc Inorganic materials 0.000 description 13
- 239000011701 zinc Substances 0.000 description 13
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 12
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 12
- 239000011787 zinc oxide Substances 0.000 description 6
- 235000014692 zinc oxide Nutrition 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010310 metallurgical process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical class [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/18—Arrangements of dust collectors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S75/00—Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures
- Y10S75/961—Treating flue dust to obtain metal other than by consolidation
Abstract
Description
Przedmiotem wynalazku jest sposób wzbogacania cząstkami metalu i/lub jego tlenkami pyłów powstających w żeliwiakach, przy którym powstające pyły wychwytywane są za pomocą filtrów.The subject of the invention is a method of enriching with metal particles and / or its oxides dusts generated in cupolas, in which the resulting dust is captured by filters.
Do wytapiania żeliwa od dawna znane są piece szybowe, zwłaszcza żeliwiaki. W tym celu metalowy wsad stapiany jest przy dodaniu nośników energii, przy czym w skład wytopu wchodzi surówka, złom obiegowy oraz złom handlowy, w zmieniających się ilościach. Przy takim procesie wytopowym różne metale zawarte w złomie ulegają wyparowaniu. Stanowią je przykładowo cynk, kadm, ołów.Shaft furnaces, especially cupola furnaces, have long been known for smelting cast iron. For this purpose, the metal charge is melted with the addition of energy carriers, and the melt consists of pig iron, recycled scrap and commercial scrap in varying amounts. With this smelting process, various metals contained in the scrap are evaporated. They are, for example, zinc, cadmium, lead.
W celu utrzymania czystości powietrza, dla odpylania gazów odlotowych pochodzących z żeliwiaków stawiane są ostre wymagania. Tak więc powstające zgazowane cząstki metalu nie mogą być odprowadzane do atmosfery, lecz są wychwytywane w filtrze znajdującym się za żeliwiakiem. Metaliczne pyły zebrane w filtrze były przetwarzane w różny sposób tak, że nadawały się do przechowywania i w ten sposób usuwane były jako odpady.In order to maintain air purity, stringent requirements are imposed on the dedusting of exhaust gases from cupolas. Thus, the resulting gasified metal particles cannot be discharged into the atmosphere, but are collected in a filter behind the cupola. The metallic dust collected in the filter was processed in various ways to make it fit for storage and was thus disposed of as waste.
Celem niniejszego wynalazku jest stworzenie sposobu pozwalającego ponownie odzyskiwać cząstki metalu zbierające się w filtrze żeliwiaka do dalszego wykorzystania tak, aby można było uniknąć kosztownego i zanieczyszczającego środowisko, składowania.The object of the present invention is to create a method that allows the recovery of metal particles accumulating in the cupola filter for further use, so that costly and polluting storage can be avoided.
Według wynalazku cel ten osiągnięty został przez sposób wzbogacania cząstkami metalu i/lub jego tlenkami pyłów powstających w żeliwiakach, przy którym po wychwyceniu przez filtr pyły metaliczne wprowadza się ponownie do żeliwiaka, a charakteryzujący się tym, że pyły metaliczne wprowadza się do żeliwiaka wielokrotnie, aż do osiągnięcia stężenia cząstek metalowych zawartego co najmniej pomiędzy 10-95% wagowych.According to the invention, this object is achieved by a method of enriching with metal particles and / or its oxides dusts generated in cupolas, in which, after being caught by the filter, the metallic dust is reintroduced into the cupola, and characterized by the fact that metal dusts are introduced into the cupola repeatedly until to achieve a concentration of metal particles comprised between at least 10-95% by weight.
Korzystne jest, gdy pyły metaliczne wprowadza się z filtrów do strefy spalania żeliwiaka razem z mieszaniną pyłów pochodzących z tych filtrów.It is advantageous when metallic dusts are introduced from the filters to the cupola combustion zone together with the mixture of dusts coming from these filters.
Korzystne jest również, gdy pyły zawierające metal wprowadza się do żeliwiaka za pomocą urządzenia w postaci dyszy lub lancy.It is also advantageous if the metal-containing dusts are introduced into the cupola by means of a nozzle or lance device.
Metaliczne pyły zbierające się w filtrze żeliwiaka zawierają częściowo cząstki szkodliwe dla środowiska. Z tego względu muszą być one usunięte jako opad. Powstawanie tych szkodliwych dla otoczenia tlenków da się wytłumaczyć tym, że w procesie spalania stosunkowo duży udział ma złom blaszany z sektora samochodowego, który jak wiadomo zawiera stosunkowo dużo cynku.Metallic dust that collects in the cupola filter contains partly environmentally harmful particles. Therefore, they must be disposed of as precipitation. The formation of these environmentally harmful oxides can be explained by the fact that metal scrap from the automotive sector, which is known to contain relatively high amounts of zinc, has a relatively large share in the combustion process.
Jeżeli pył z filtra zawierający tlenki cynku wprowadza się w proces wytapiania żeliwiaka, to najpierw redukuje się tlenek cynku w strefie wytapiania w temperaturach pomiędzy 1500° do 1600° i w postaci gazowej wznosi się w żeliwiaku do góry, gdzie utlenia się tworząc ponownie tlenek cynku. W tej postaci związek jest wychwytywany przez filtr.If the filter dust containing zinc oxides is introduced into the cupola smelting process, the zinc oxide is first reduced in the smelting zone at temperatures between 1500 ° to 1600 ° and rises in the gaseous form upwards in the cupola, where it oxidizes again to form zinc oxide. In this embodiment, the compound is caught by the filter.
166 449166 449
Jeżeli proces ten powtarza się wiele razy, to pyły zawierające cynk można w filtrze tak dalece wzbogacić, że możliwe jest odzyskiwanie cynku z odfiltrowanego pyłu. Ma to miejsce z reguły wtedy gdy zawartość cynku wynosi 10 - 95% wagowych.If this process is repeated many times, the zinc-containing dusts in the filter can be enriched to such an extent that it is possible to recover zinc from the filtered dust. This is usually the case when the zinc content is 10-95% by weight.
Przykład. Do żeliwiaka wprowadza się złom składający się z blach z karosorii samochodowych, stanowiący 60% wsadu. Blachy takie z reguły zawierają 2,5 do 3% cynku. Ze względu na niską temperaturę parowania cynku wynoszącą około 400°C, cynk paruje bardzo szybko w atmosferze utleniając się do postaci ZnO (tlenek cynku) i jako pył wychwytywany jest za pomocą filtrów. Jako pył uchodzi tylko to co jest niepalne, jak na przykład cynk i ołów. Ołów występuje jednak w złomie tylko w minimalnych ilościach i dlatego jego zawartości w pyle filtracyjnym jest niemierzalna. Po pierwszym przejściu zawartość tlenku cynku w pyle filtracyjnym wynosiła 30%. Do żeliwiaka, którego wsad składa się ponownie w 60% ze złomu, wprowadza się ponownie pył filtracyjny wzbogacony ZnO, a następnie w ten sam sposób odparowuje się cynk razem z cynkiem pochodzącym z wprowadzonego pyłu filtracyjnego tak, że zmierzona koncentracja cynku w pyle filtracyjnym wynosi teraz 40 do 46%. Taka zawartość cynku nadaje się już do opłacalnego przerobu sposobem hutniczym. Oszczędza się w ten sposób na kosztach związanych z usuwaniem pyłu filtracyjnego jako odpadu i nie zanieczyszcza się środowiska.Example. The cupola is filled with scrap consisting of car body sheets, constituting 60% of the charge. Such sheets generally contain 2.5 to 3% zinc. Due to the low zinc evaporation temperature of about 400 ° C, zinc evaporates very quickly in the atmosphere, oxidizing to the form of ZnO (zinc oxide) and is collected as dust by filters. Only non-flammable materials, such as zinc and lead, are classified as dust. However, lead is present in scrap only in minimal amounts and therefore its content in the filter dust is immeasurable. After the first pass, the zinc oxide content of the filter dust was 30%. Filter dust enriched with ZnO is reintroduced into the cupola, the charge of which is again 60% scrap, and then the zinc is evaporated in the same way together with the zinc from the introduced filter dust, so that the measured zinc concentration in the filter dust is now 40 to 46%. This zinc content is already cost-effective by the metallurgical process. This saves the costs associated with the disposal of the filter dust as waste and does not pollute the environment.
IM 449IM 449
Departament Wydawnictw UP RP. Nakład 90 egz.Publishing Department of the UP RP. Circulation of 90 copies
Cena 1,00 zł.Price PLN 1.00.
Claims (3)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH492/89A CH677195A5 (en) | 1989-02-09 | 1989-02-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL166449B1 true PL166449B1 (en) | 1995-05-31 |
Family
ID=4188248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL90283670A PL166449B1 (en) | 1989-02-09 | 1990-02-07 | Method for enriching dusts wolt metal particles evolving in cupolas |
Country Status (24)
| Country | Link |
|---|---|
| US (1) | US5108496A (en) |
| JP (1) | JPH02263088A (en) |
| AT (1) | AT394212B (en) |
| AU (1) | AU625605B2 (en) |
| BE (1) | BE1003205A3 (en) |
| BR (1) | BR9000572A (en) |
| CA (1) | CA2008046C (en) |
| CH (1) | CH677195A5 (en) |
| CS (1) | CS65590A2 (en) |
| DD (1) | DD292071A5 (en) |
| DE (1) | DE3942902A1 (en) |
| ES (1) | ES2023535A6 (en) |
| FI (1) | FI90317C (en) |
| FR (1) | FR2642826B1 (en) |
| GB (1) | GB2228071B (en) |
| HU (1) | HU900138D0 (en) |
| IT (1) | IT1238615B (en) |
| NL (1) | NL9000051A (en) |
| NO (1) | NO175986C (en) |
| PL (1) | PL166449B1 (en) |
| RU (1) | RU1804585C (en) |
| SE (1) | SE507268C2 (en) |
| YU (1) | YU1390A (en) |
| ZA (1) | ZA90633B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4109214A1 (en) * | 1991-03-21 | 1992-09-24 | Linde Ag | METHOD FOR OPERATING A COUPLING OVEN |
| DE4123626A1 (en) * | 1991-07-17 | 1993-01-21 | Intercept Ag | Reconditioning metallurgical residues with reduced installation costs - involves agglomeration or pelleting of residues, supplying to counted-flow melting unit with dust filter, heating and drying, etc. |
| JPH05195094A (en) * | 1992-01-23 | 1993-08-03 | Nippon Steel Corp | Method for concentrating and recovering zn in zn-containing steelmaking dust |
| WO1997012997A1 (en) * | 1995-10-02 | 1997-04-10 | Nkk Corporation | Scrap melting method |
| KR19990022046A (en) * | 1996-03-27 | 1999-03-25 | 헤니흐 이 | Recovery and treatment of residues produced in cuopolano |
| AT405528B (en) * | 1996-07-10 | 1999-09-27 | Voest Alpine Ind Anlagen | METHOD FOR RECYCLING DUST DURING METALLURGICAL PROCESSES |
| DE19708376C1 (en) * | 1997-03-01 | 1998-07-02 | Gasteier & Bilke Verfahrenstec | Use of a briquette made from waste materials as an additive for smelting furnaces in an iron foundry |
| US5785737A (en) * | 1997-04-08 | 1998-07-28 | Bethlehem Steel Corporation | Method for recycling iron bearing sludges in a steelmaking operation |
| EP1019554B1 (en) * | 1997-09-30 | 2002-04-24 | VOEST-ALPINE STAHL Donawitz GmbH | Pyrometallurgical method and device for separating zinc and/or cadmium from lead in metallurgical residues |
| SE518531C2 (en) * | 2000-05-05 | 2002-10-22 | Aga Ab | Methods for recycling metals |
| JP5200422B2 (en) * | 2007-05-26 | 2013-06-05 | Ｊｆｅスチール株式会社 | Hot metal production method using vertical scrap melting furnace |
| JP5433994B2 (en) * | 2008-06-30 | 2014-03-05 | Ｊｆｅスチール株式会社 | Hot metal production method using vertical melting furnace |
| US8377175B2 (en) | 2010-02-26 | 2013-02-19 | Arcelormittal Investigacion Y Desarrollo, S.L. | Apparatus and method for treating exhaust gas |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB755380A (en) * | 1953-08-03 | 1956-08-22 | Wilfried Strik Strikfeldt | Installation for extraction of dust from hot waste gases, in particular waste gases from a cupola, and method of operating such installation |
| US3375069A (en) * | 1965-07-23 | 1968-03-26 | Leonard A. Duval | Process for removing zinc oxide from iron oxide flue dust by the use of spent pickle liquor |
| CA934163A (en) * | 1971-05-03 | 1973-09-25 | W. Gulyas James | Recovering and utilizing dust particles from ore roasting operations |
| JPS522806A (en) * | 1975-06-26 | 1977-01-10 | Kawasaki Steel Corp | Process for treatment of ironmaking dust containing zinc |
| FR2375562A1 (en) * | 1976-12-24 | 1978-07-21 | Air Ind | Cupola furnace fitted with dust extn. plant - in which dust is returned to the cupola via an air injection pipe |
| FR2438495A1 (en) * | 1978-10-09 | 1980-05-09 | Air Ind | PROCESS FOR TREATING STEEL FUMES AND INSTALLATION FOR IMPLEMENTING SAME |
| JPS5735644A (en) * | 1980-08-13 | 1982-02-26 | Toshin Seikou Kk | Recovering method for valuable metal from dust from electric furnace for manufacturing steel |
| FR2497235B1 (en) * | 1980-12-26 | 1985-07-12 | Usinor | PROCESS FOR RECOVERING THE DUST PRODUCED BY AN ARC FURNACE DURING THE PROCESSING OF STEEL FROM SCRAP AND INSTALLATION FOR ITS IMPLEMENTATION |
| JPS6053090B2 (en) * | 1983-07-26 | 1985-11-22 | 住友金属鉱山株式会社 | Method for recovering Ζn and Pb from steel dust |
| AT380901B (en) * | 1984-09-28 | 1986-07-25 | Voest Alpine Ag | METHOD FOR RECOVERING METALS FROM METAL-OXIDE-CONTAINING HOSPITAL DUST AND SYSTEM FOR CARRYING OUT THE METHOD |
| AT388390B (en) * | 1987-11-12 | 1989-06-12 | Voest Alpine Ag | METHOD FOR DEZINCIFYING THE FLOW OF MATERIAL WHEN OPERATING A PLANT FOR PRODUCING RAW IRON |
-
1989
- 1989-02-09 CH CH492/89A patent/CH677195A5/de not_active IP Right Cessation
- 1989-12-23 DE DE3942902A patent/DE3942902A1/en active Granted
-
1990
- 1990-01-02 AT AT0000290A patent/AT394212B/en not_active IP Right Cessation
- 1990-01-04 YU YU1390A patent/YU1390A/en unknown
- 1990-01-09 NL NL9000051A patent/NL9000051A/en not_active Application Discontinuation
- 1990-01-09 JP JP2001135A patent/JPH02263088A/en active Pending
- 1990-01-12 ES ES9000075A patent/ES2023535A6/en not_active Expired - Fee Related
- 1990-01-15 HU HU90138A patent/HU900138D0/en unknown
- 1990-01-18 CA CA002008046A patent/CA2008046C/en not_active Expired - Fee Related
- 1990-01-24 RU SU904742896A patent/RU1804585C/en active
- 1990-01-25 FR FR909000836A patent/FR2642826B1/en not_active Expired - Fee Related
- 1990-01-26 IT IT19174A patent/IT1238615B/en active IP Right Grant
- 1990-01-29 ZA ZA90633A patent/ZA90633B/en unknown
- 1990-01-29 GB GB9001953A patent/GB2228071B/en not_active Expired - Fee Related
- 1990-01-31 AU AU48940/90A patent/AU625605B2/en not_active Ceased
- 1990-02-07 PL PL90283670A patent/PL166449B1/en unknown
- 1990-02-07 BE BE9000140A patent/BE1003205A3/en not_active IP Right Cessation
- 1990-02-07 DD DD90337658A patent/DD292071A5/en not_active IP Right Cessation
- 1990-02-08 SE SE9000459A patent/SE507268C2/en not_active IP Right Cessation
- 1990-02-08 NO NO900622A patent/NO175986C/en not_active IP Right Cessation
- 1990-02-08 BR BR909000572A patent/BR9000572A/en not_active IP Right Cessation
- 1990-02-08 FI FI900634A patent/FI90317C/en not_active IP Right Cessation
- 1990-02-09 US US07/478,650 patent/US5108496A/en not_active Expired - Fee Related
- 1990-02-09 CS CS90655A patent/CS65590A2/en unknown
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